Table 3.

Top 10 Keywords with the highest frequency and centrality values for postoperative ileus

Ranking	Frequency	Keyword	Centrality	Keyword
1	341	Postoperative ileus	0.73	Resection
2	120	Colorectal surgery	0.65	Enhanced recovery
3	116	Surgery	0.62	Alvimopan
4	110	Risk factors	0.46	Double blind
5	101	Management	0.37	Management
6	80	Recovery	0.35	Postoperative ileus
7	77	Enhanced recovery	0.35	Abdominal surgery
8	66	Resection	0.32	Intestinal obstruction
9	61	Abdominal surgery	0.3	Mechanisms
10	58	Metaanalysis	0.3	Inflammatory response